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化学学报
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化学学报 ›› 1998, Vol. 56 ›› Issue (9): 859-866. 上一篇    下一篇

研究论文

四苯硼酸铷由水至直链一元醇中的标准迁移热力学函数

李大成;温路新;王勇;刘道杰   

  1. 山东省聊城师范学院化学系
  • 发布日期:1998-09-15

The standard thermodynamic function of transfer of rubidium tetraphenylborate from water to straight-chain n-alkanols

Li Dacheng;Wen Luxin;Wang Yong;Liu Daojie   

  • Published:1998-09-15

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442

被引次数

3

在288.15～328.15K下,用光度法测定RbBPh~4在直链一元醇中的溶解度,计算并讨论RbBPh~4由水至直链一元醇中的标准迁移热力学函数,经微机曲线拟合给出Δ~t~rG^°~w~→~s,Δ~t~rS^°~w~→~s随温度及碳原子数的经验关系。用Born模型及单层结构模型对标准迁移自由能变化规律进行定性与定量的解释。

关键词: 四苯硼酸, 铷化合物, 热力学函数, 离子迁移率, 活度系数, 溶解度, 离子, 缔合, 自由能

Solubilities of RbBPh~4 in water, methanol, ethanol, 1-propanol, 1- butanol, 1-pentanol, 1-hexanol, 1-hepanol and 1-octanol at 288.15～ 328.15K have been determined by spectrophotometry. The standard transfer thermodynamic function of RbBPh~4 from water to straight- chain alkanols at 288.15～328.15K has been calculated. The results can be expressed. Furthermore, the contribution of microscopic interaction to thestandard Gibbs energy of transfer of RbBPh~4 was calculated and discussed.

Key words: TETRAPHENYLBORATE, RUBIDIUM COMPOUNDS, THERMODYNAMIC FUNCTION, IONIC MOBILITY, ACTIVITY COEFFICIENT, SOLUBILITY, IONS, ASSOCIATION, FREE ENERGY

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